Adjustable telescopic sight mount base



Patented Sept. 29, 1953 ADJUSTABLE TELESCOPIC SIGHT MOUNT BASE James L. Winton, Cherry Grove, Oreg.

Application June 17, 1952, Serial No. 293,885

4 Claims.

This invention relates to a base connectible to the receiver of a rifle or other firearm, and adapted to support a telescopic sight in selected positions of adjustment relative to said firearm.

The main object of the present invention is to provide a generally improved telescopic sight mount base, that will permit accurate adjustments of the telescopic sight supported thereupon for windage and elevation.

More specific objects of the invention are as follows:

First, to provide a base of the character referred to which will permit the desired adjustments as to windage and elevation to be made with speed and ease;

Second, to provide a mount base as described which will be so formed as to permit any of various telescopic sight mounts now in use to be mounted thereon;

Third, to provide a base as stated which will be of simple construction, so as to permit its manufacture at relatively low cost; and

Fourth, to provide a telescopic mount base that will be rugged, durable, and will not get out of adjustment readily.

Other objects will appear from the following description, the claims appended thereto, and from the annexed drawing, in which like reference characters designate like parts throughout the several views, and wherein:

Figure 1 is a side elevational view of a tele- Figure 2 is a transverse sectional View on line 2-2 of Figure 1, showing part of the means for effecting lateral adjustments;

Figure 3 is a transverse sectional View on line 33 of Figure 1, showing the other part of the means for effecting lateral adjustments;

Figure 4 is a transverse sectional view on line 4-4 of Figure 1, showing part of the means for effecting adjustments for elevation;

Figure 5 is a transverse sectional view on line 5-5 of Figure 1, showing the other part of the means for making adjustments for elevation;

Figure 6 is an enlarged perspective view of the device disassociated from a firearm and telescopic sight; and

Figure '7 is a plan section, on a reduced scale, taken on line 'l! of Figure 6.

Referring to the drawings in detail, the reference numeral has been applied generally to a rifle or similar firearm, having a receiver I2.

The device constituting the present invention includes a body designated generally by the reference numeral [4, said body being generally elongated and being machined from a single piece of solid, metal material. One side wall it of the body I4 is flat, and will ordinarily be disposed in a vertical plane, during use of the device. The opposite side wall I8 is recessed from end to end thereof complementarily to the cross sectional configuration of the receiver I2 on which the device is to be mounted. A series of screws I9 or equivalent fastening elements is provided upon the body I 4, said screws being spaced longitudinally of the body and extending through smooth walled openings formed therein. The receiver 12 of the firearm l0 will, as will be understood, be provided with a longitudinal series of threaded openings adapted to engage the screws IQ, for the purpose of fixedly connecting the body 14 to the rifle receiver.

Carried by the body [4, and extending longitudinally of the upper edge thereof, is a tongue support member 20, said member extending the full length of the body. The tongue support member is disposed laterally of the flat surface it of the body 14, as may be noted from Figures 2 to 5 inclusive, and is integrally connected at one end to the body of the device (see Figure '7). A slit 22, which can be made by a saw or the like, is extended longitudinally of the tongue support member and body I4, said slit opening at one end of the body and terminating short of the other end thereof, to permit the tongue support member to remain integrally connected to the body at said other end of the body, while being spaced away from the body for the rest of its length.

The purpose of this construction is to permit the free end of the tongue support member 2 3 to be flexible laterally of the body, and to increase the flexibility of the tongue support member relative to the body, said tongue support can, along its outer side wall, be concavely formed as at 24 for a part of its length, thus to reduce the thickness of the tongue support member 29 adjacent the integral connection of said member to the body.

The reason for imparting flexibility to the free end of the tongue support member, at one end of the body It, is to permit adjustments of a telescopic sight carried by the device, to compensate for windage, the forward end portion of the telescopic sight being shifted laterally during the making of adjustments of this type.

It is desirable that the user of the device be able to control accurately the lateral adjustments of the free end of the tongue support member, and accordingly, I provide a lateral adjustment screw 26 threadedly engaged in a transverse opening 28 formed in the free end portion of the member 20, the inner end of said screw being rounded (see Figure 7) and being in engagement with the fiat side wall l6 of the body l4. It will be readily appreciated, in this connection, that when the screw 26 is threaded inwardly of the opening 28, it will cause the free end portion of the tongue support member to be shifted laterally of the body I4 and away from said body, rotation of the screw 26 in an opposite direction being efiective to allow the inherent springable nature of the integral connection between the tongue support member and body to assert itself, for shifting the tongue support member laterally of and toward the body.

Adjacent the screw 26, I provide a lateral adjustment holding screw extending through a smooth walled, transverse opening 38 formed in the tongue support member 28, said opening 30 being extended parallel to the threaded opening 28, and being in registration with a threaded opening 32 formed in and extending transversely of the body It. The lateral adjustment holding screw 34 extends through the opening 30, and is threadedly engaged in the opening 32. It will be seen that when the tongue support member 20 has been laterally adjusted toward and away from the body [4 to the desired extent, by operation of the screw 26, it can be securely retained in its selected position of adjustment, by means of the holding screw 54.

Integrally connected at one end to the free end. portion of the member 20 is a tongue 35, said tongue extending parallel to the tongue support member and overlying said member. The tongue 36, for the rest of its length, is separated from the tongue support member, through the provision of a slit 58, that permits the free end portion of the tongue 36 to be flexed upwardly and downwardly relative to the member 2-!) to which it is connected.

For the purpose of controlling the up-anddown flexure of the tongue 38, I provide an adjusting screw 45, extending through and threadedly engaged in an opening 22 formed in the member 20, adjacent the integral connection of said member to the body 14. The screw it is formed like the screw 26, but is arranged normally to the screw 26, as best shown in Figures 1 and 7.

The screw 66 abuts, at its inner end, against the underside of the free end portion of the tongue 36, and it will be apparent that when the screw 40 is threaded upwardly, it will flex the free end portion of the tongue away from the member 29, thus to adjust the rear end portion of the telescopic sight upwardly to compensate for elevation.

Adjacent the elevation adjustment screw 40, I provide an elevation adjustment holding screw d4, arranged parallel to the screw 48 and extending through a smooth walled opening 45 formed in the member 20. The screw 44 is threadedly engaged in a threaded opening 48 formed in the free end portion of the tongue 36 (Figure 4), for the purpose of retaining said free end portion of the tongue 36 in selected positions of adjustment relative to the tongue support member 29.

The tongue 36, when considered from the standpoint of its cross sectional configuration, is of the dove-tail type, as will be noted from Figure ,4 4 or 5, thus to permit insertion of the tongue in the complementary grooves of conventionally constructed telescopic sight mounts. In this connection, the tongue is adapted for supporting any of various makes of mounts, and therefore is provided, on its top surface, with a pair of transversely extended recesses 58 specifically adapted to accommodate the locking bolts of a Grifiin and Howe mount. Medially between its ends, the tongue 36 has a series of notches 52 formed in its side wall, these being adapted to accommodate the locking bolt of a Jeager mount.

A conventional telescopic sight has been illustrated in supported position upon the device constituting the present invention, said sight having longitudinally spaced mounts 54 carrying the scope 56. The mounts 5t have groove at their lower ends receiving the tongue 36 of the pres-- ent invention.

From the construction which has been illustrated and described, it will be apparent that when the body [4 has been fixedly connected to the receiver 12 of the firearm, and the scope 56 has been secured to the tongue 35, the user can make adjustments for either windage or elevation, the construction being such as to permit these adjustments to be made either independently of one another or conjointly. If it is desired to make an adjustment for windage, the screw 25 is rotated as necessary, to shift the free end portion of the tongue support member 20 laterally of the body, thus to shift the forward portion of the scope 56 laterally. The screw 34 is used, as hereinbefore noted, to hold the scope in the selected position of lateral adjustment.

To make an adjustment for elevation, the screw it is rotated, to flex the free end portion of the tongue 36 upwardly or downwardly as the case may be, thus to impart vertical movement to the rear end portion of the scope. The screw 44 is used to retain the parts in their selected positions of vertical adjustment.

In considering the construction and advantages of the invention, it has been found particularly effective to provide an arrangement wherein the tongue support member is integrally connected at one end to the body [4, with the tongue 36 being integrally connected to the free end portion of the tongue support member, that is, that end of the tongue support member that is removed from the integral connection of the member to the body. This arrangement, in use, is particularly advantageous in permitting proper lateral and vertical adjustments of the scope 56 to be obtained, when the mounts 5d of said scope are secured one to the anchored end of the tongue, and the other to the free end of the tongue.

It is believed apparent that the invention is not necessarily confined to the specific use or uses thereof described above, since it may be utilized for any purpose to which it may be suited. Nor is the invention to be necessarily limited to the specific construction illustrated and described, since such construction is only intended to be illustrative of the principles of operation and the means presently devised to carry out said principles, it being considered that the invention comprehends any minor change in construction that may be permitted within the scope of the appended claims.

What is claimed is:

1. An adjustable telescopic sight mount base comprising a single block of material having a pair of transversely spaced, longitudinal slits opening inwardly from opposite ends of the block to divide the same into a body adapted for connection to a firearm, a tongue support member integral with said body, and a tongue integral with said tongue support member and adapted for supporting a telescopic sight mount, one of said slits intervening between the body and tongue support member and lying in a vertical plane for eifecting adjustment of the tongue support member and tongue laterally of the body, and the other slit lying in a horizontal plane and intervening between the tongue support member and tongue, for effecting adjustment of the tongue vertically of the tongue support member.

2. An adjustable telescopic sight mount base comprising an elongated, solid block having a pair of transversely spaced, longitudinal slits opening inwardly from opposite ends thereof and extending for the greatest part of the length of the block, to divide the same into a body adapted for connection to a firearm, a tongue support member integral with said body, and a tongue integral with said tongue support member and adapted for supporting a telescopic sight mount, one of said slits intervening between the body and tongue support member and lying in a vertical plane for effecting joint adjustment of the tongue support member and tongue laterally of the body, and the other slit lying in a horizontal plane and intervening between the tongue support member and tongue for effecting adjustments of the tongue vertically of the tongue support member.

3. An adjustable telescopic sight mount base comprising an elongated block having a pair of transversely spaced, longitudinal slits opening inwardly from opposite ends thereof and extending for the greatest part of the length of the block, said slits being arranged to divide the block into a body adapted. for disposition along side the receiver of a firearm and having means for connecting the same to said receiver, a tongue support member integral at one end with said body and disposed along side said body along the upper longitudinal edge thereof, and a tongue integral at one end with and overlying said tongue support member and adapted for supporting a telescopic sight mount, one of said slits intervening between the body and tongue support member and lying in a vertical plane for effecting joint adjustment of the tongue support member and tongue laterally of the body, and the other slit lying in a horizontal plane and intervening between the tongue support member and tongue for efiecting adjustments of the tongue vertically of the tongue support member.

1. An adjustable telescopic sight mount base comprising an elongated block having a pair 01 transversely spaced, longitudinal slits opening inwardly from opposite ends thereof and extending for the greatest part of the length of the block, said slits being arranged to divide the block into a body adapted for disposition along side the receiver of a firearm and having means for connecting the same to said receiver, a tongue support member integral at one end with said body and disposed along side said body along the upper longitudinal edge thereof, and a tongue integral at one end with and overlying said tongue support member and adapted for supporting a telescopic sight mount, one of said slits intervening between the body and tongue support member and lying in a vertical plane for efiecting joint adjustment of the tongue support member and tongue laterally of the body, and the other slit lying in a horizontal plane and intervening between the tongue support member and tongue for effecting adjustments of the tongue vertically of the tongue support member; and means for adjusting said tongue support member toward and away from the body and said tongue toward and away from the tongue support member, said last named means including adjusting screws threaded in the tongue support member and tongue respectively and engageable against the body and tongue support member, and locking screws disposed adjacent the respective adjusting screws, the body having a threaded opening receiving the locking screw of the tongue support member and the tongue having a threaded opening receiving the other locking screw, said locking screws being adapted when threaded into their associated threaded openings to preserve the lateral and vertical adjustments of the tongue support member and tongue respectively.

JAMES L. WINTON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 924,445 Foss June 8, 1909 1,459,944 Belding June 26, 1923 2,103,539 Kuhn Dec. 28. 1937 

